Peripheral Photoelectric Gaze Sensing for Wearable Displays
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Solution Overview
Problem
Existing VR devices face inefficiencies in determining gaze positions due to processor limitations in processing eye images, leading to lower display efficiency and effectiveness.
Innovation Solution
A display device with photoelectric sensor assemblies in the peripheral region that convert optical signals into electric signals, processed by a high-efficiency processing circuit to quickly determine gaze positions, allowing for improved image display efficiency and higher refresh rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a camera is used to capture eye images for gaze position determination, then gaze position can be determined, but the processor's processing efficiency is limited leading to lower display efficiency and refresh rates
Solution Approach 1:
The patent replaces the camera-based optical imaging system with a photoelectric sensor assembly that directly detects eye reflection characteristics. This substitution eliminates the need for complex image processing and transforms the gaze determination from a computational task to a direct electrical signal measurement, thereby improving processing efficiency and display refresh rates
Solution Approach 2:
The patent extracts only the essential reflection characteristic information from the eye using photoelectric sensors, rather than capturing complete eye images. By extracting only the necessary optical signal data (reflection intensity and position) directly from the eye surface, the system reduces processing complexity and time while maintaining sufficient accuracy for gaze position determination
2Productivity
If photoelectric sensor assemblies are added to the display device, then gaze position determination efficiency is improved, but device complexity increases
Solution Approach 1:
The patent merges the photoelectric sensor assembly with the display panel structure, integrating the gaze detection function into the existing display device architecture. The sensor assembly is positioned at the periphery of the display panel, combining multiple functions (display and gaze detection) into a single integrated structure, thereby reducing overall system complexity despite adding detection capability
Solution Approach 2:
The display device is designed to perform multiple functions: the display panel displays visual information while the integrated photoelectric sensor assembly simultaneously captures eye reflection characteristics for gaze position determination. This multi-functionality eliminates the need for separate dedicated gaze tracking devices, reducing overall system complexity
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables rapid and accurate determination of gaze positions, enhancing display efficiency and achieving higher refresh rates without affecting normal display performance.
Implementation Method 1
each of the photoelectric sensor assemblies is configured to receive an optical signal reflected via eyes of a user and convert the optical signal into an electric signal
Data Source
AI summary
Provide is a display device including a display panel, a plurality of photoelectric sensor assemblies, and a processing circuit. The display panel includes a display region and a peripheral region surrounding the display region. The plurality of photoelectric sensor assemblies are disposed in the peripheral region, wherein each of the photoelectric sensor assemblies is configured to receive an optical signal reflected via eyes of a user and convert the optical signal into an electric signal. The processing circuit is connected to each of the photoelectric sensor assemblies, wherein the processing circuit is configured determine a gaze position of the eyes of the user on the display panel based on a signal value of the electric signal transmitted by each of the photoelectric sensor assemblies and a position of at least one of the photoelectric sensor assemblies.